Hoist



(No Model.) 2 SheetsSheet 1.

P. A. ROBITAILLE.

HOIST.

No. 425,699. Patented Apr. 15, 1890.

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GA M 9 $5 A TTORNEYS 2 B L L I A T I 0 v R A R HOIST.

Patented Apr. 15, 1 890.

WITNESSES W/QW Z.

A TTOHNE K8 UNITED STAT S PATENT OFFICE.

FRANK A. ROBITAILLE, OF RIMINI, MONTANA.

l-IOIST.

SPECIFICATION forming part of Letters Patent NO. 425,699, dated April 15, 1890.

Application filed January 11, 1890. Serial No. 336,665. (No model.)

To all whom it may concern:

Be it known that I, FRANK A. ROBITAILLE, of Bimini, in the county of Lewis and Clarke and State of Montana, have invented a new and Improved Hoist, of which the following is a full, clear, and exact description;

My invention relates to improvements in hoisting apparatus; and the object of my invention is to provide a simple, efficient, lightrunning, strong, and durable hoisting apparatus that is especially adapted to raise material from a mine-shaft, but that may be used for all kinds of hoisting purposes.

Tothis end my invention consists in certain features of construction and combinations of parts, that will be hereinafter fully described, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters and numerals of reference indicate corresponding parts in all the figures.

Figure l is a side elevation of the device as applied to abucket or cage in a shaft; Fig. 2, a plan View of the frame containing the winding-drum and driving mechanism; Fig. 3, an end View of the same, and Fig. t a front elevation of the same.

The upright standards A at the corners, the side bars B O and B (3, attached thereto, and the cross-bars D at the top constitute the frame of the driving and winding machine. The side bars B, B, C, and 0 pass through mortises in the standards A. The bars B, B, and C are held in position therein by keys at, which also take up any wear there may be in the joints of the frame. The bar 0 is pivoted at one end by the bolt 1) in one of the standards, and the other end is capable of a limited vertical movement in the opposite standard. The bars B and 0 extend at one end beyond the'standards A. The cross-bars D extend across the top of the frameand are bolted at each end to the side bars B B. The side bars B, B, O, and O are provided with bolts 1,which pass through the ends thereof, and the standards A are prevented from spreading apart by rods d, which pass through the standards on each end of the machine and are provided at each end with suitable nuts to hold them in position.

I have shown the frame attached to the beams E of a mill, which in turn rest upon the timbers F, which support a counter-shaft 6; but it is obvious that the timbersF may be attached to the machine-frame and the shaft 6 mounted thereon. The shaft 6 is mounted in suitable boxes f upon the timbers F, and is provided with adriving-pulley H and a friction-pulley J which is attached to the shaft near the inner end thereof, and

which is made, preferably, of paper.

Directly above the pulley J is a pulley K, which has a face ofabout the same width as the face of the pulley J, but which is of much larger diameter. The pulley K is attached to the shaft L, which extends across the frame of the machine and turns in suitable bearings 8, which are attached to the side bars-O and C by the bolts 4, the pulley K being upon the end of the shaft next the side bar 0, so that the pulley may be easily raised with said side bar.

The shaft L is also provided with a drum M, which is attached thereto, is provided with flanges h at each end, and is held in position upon the shaft by a collar g. A vertical lever-arm N is pivoted near the center by a pin h to the projecting end of the side bar B above the bar 0, the lever being mortised to receive the bar B. The ends of the leverarm N are slotted, and the lower end straddles the end of the bar 0, and is pivoted thereto by the bolt 'L",which extends through a diagonal slot j in'the bar 0, which bolt may be provided with a roller, as '5, to travel in said slot, so that when the lever-arm N is moved forward or backward the bolt 1; will move in the inclined slot j and the bar 0 will be raised or lowered. The upper end of the lever N is pivotally attached to the connecting-rod O by the pin Z, and the connecting-rod is attached to the rod or pipe 0 by the bolt Z; but the end of the rod or pipe 0 may be flattened and pivoted directly to the lever N, and the apparatus will work as well. The rod 0 extends to the mouth of the shaft P, where it is attached to the leverR by the pin m.

The lever R is pivoted at the bottom to the lower part of the frame S, and is provided with a suitable latch n, which may engage a notch 19 of the rack, which is also attached to the frame S, and hold the lever B in a desired position.

Attached to the drum M is a rope t, which passes over a pulley u, that is hung in the top of the frame S, and is attached to the bucket or cage T in the shaft P, so that whenthe rope is wound upon the drum M the bucket T will be raised and when it is unwound the bucket will be lowered.

A curved brake-shoe W is attached by bolts 2 to the under side of the cross-bars D just above the pulley K, so that by raising the pulley against the brake-shoe it may be stopped entirely, or its speed may be slackened when the bucket T is lowered into the shaft P and the rope t is unwound from the drum, thus turning the drum, the shaft L, and the pulley K. r The device is operated as follows: The operator at the mouth of the shaft P grasps the lever B and throws it forward. This brings forward the rod or pipe 0 and the upper end of the lever-arm N, causing said lever-arm totilt on the pin h, thus throwing out the lower end of the arm, forcing the bolt 1" into the upper end of the inclined slot j, depressing the side bar 0, and forcing the pulley K, which is mounted thereon, upon the pulley J, and as the pulley J is in constant motion the friction of the two pulleys will transmit the motion to the pulley K, which will turn the shaft L, to which it is attached, the drum M upon said shaft, and will Wind the rope 25 upon said drum, thus raising the bucket T at the other end of the rope. To lower the bucket T, the lever B is thrown in the opposite direction, thus actuating the rod 0 and leverarm N and throwing the bolt a" into the lower end of the slot j, raising the side bar 0' and pulley K from the pulley J. The-weight of the bucket will then carry it down and unwind the rope 15 from the drum M. If the buckettravels too fast, the lever R may be thrown still farther in the same direction, thus forcing the bolt 1; farther into the lower end of the slot j and raising the side bar 0' till the top of the pulley K bears against the brake-shoe V, thus slackening the speed of the pulley and of the drum M, which is attached to the same shaft as the pulley, or stopping it altogether. The speed with which the bucket or cage descends may thus be regulated by the pressure upon the lever B.

- It will be seen from the foregoing description that by connecting the device with a re volving shaft of a mill or other power the whole apparatus may be operated and controlled by one person at the mouth of the shaft.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A hoisting apparatus consisting, essentially, of a suitable frame having a pivoted side bar, a power-shaft provided with a friction-pulley, a second shaft journaled in a fixed bar and the pivoted side bar of the frame and provided with a friction-pulley and a windingdrum, and a lever pivoted on the frame and provided with a pin engaging a slot in the pivoted side bar of the frame, substantially as shown and described. i

2. In a hoisting apparatus, the combination, with a frame having one side bar extended and a corresponding lower side bar pivoted at one end and also extended at its free end, which free end is provided with a diagonal slot, and a power-shaft provided with a friction-pulley, of a second shaft provided with a winding-drum and a friction-pulley, said shaft being journaled at the end carrying the friction-pulley on the pivoted side bar, a

lever pivoted on the upper extended side bar, and a pin in the lower end of said lever engaging the slot of the pivoted bar, substantially as described.

3. In .a hoisting device, the combination, with a frame having the extended sidebar B and pivoted side bar 0', having a diagonal slot in its free end, and a'power-shaft provided with a friction-pulley, of shaft L, friction-pulley K, lever N, and pin '11, substantially as shown and described.

4. Ina hoisting device, the combination,

with a frame having extended side bar B and pivoted sidebar C, having a diagonal FRAN K A. ROBITAILLE.

V \Vitnesses:

J. T. SMITH, C. F. SHERWIN.

ICO 

